Kick the muffler; listen for stones inside.

Karl Wolz
 
 

|-----Original Message-----
|From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] 
|On Behalf Of Zoran Mladen
|Sent: Monday, September 26, 2011 6:55 PM
|To: vanagon@GERRY.VANAGON.COM
|Subject: Re: HELP-- 45 MPH @ WOT ???
|
|Cat is clogged...or muffler is clogged...
|
|
|From: Mike Miller <mwmiller6@ATT.NET>
|To: vanagon@GERRY.VANAGON.COM
|Sent: Monday, September 26, 2011 3:38 PM
|Subject: Re: HELP-- 45 MPH @ WOT ???
|
|O2 sensor? Try pulling the lead and see what happens.
|
|Don't blame me if it blows up.
|
|Mike
|
|
|On Sep 26, 2011, at 2:26 PM, TJ Hemrick wrote:
|
|> I'm going to throw this out there as I'm still having some 
|trouble and 
|> perplexing trouble at that.� I've been having some problems getting 
|> the van up to speed and holding speed on the highway.� it starts, 
|> runs, accelerates fine.� It's a little slow after 50 but right at 60 
|> mph (4k), the engine just stops pulling.� If I give it any more gas, 
|> she just winds down.� I have to back pedal to get it up 
|there and keep 
|> it there.� It's a VERY fine sweet spot and I have NO power at that 
|> speed.� People are blowing by me like I'm going backwards.
|> Here's the crazy part, if I floor it, it bogs down and will ONLY do
|> 45 mph
|> and it has a very slight sputter to it.
|>
|> Here's the scoop: 87 GL, 2WD, Auto, stock 2.1, I COMPLETELY cleaned 
|> the fuel tank out for a fresh set of gaskets about 6 months ago, new 
|> fuel filter, new fuel pump, new fuel lines from bow to stern (dumped 
|> the firewall fitting), new FI clamps and hoses on the injectors, and 
|> has been running well (aside from marginal gas mileage).
|>
|> I've been through a few tanks of gas and a bottle of water 
|remover so 
|> that's a non issue.--NO CHANGE.
|> I swapped AFM's since it's quick, easy, and I have a few 
|spares. --NO 
|> CHANGE.
|> I swapped Air filters (for the same reason as above). --NO CHANGE.
|>
|> I've pretty much given up on a fuel flow or air flow issue 
|as it's at 
|> the EXACT same speed/RPM range EVERY time that's plaguing me 
|with the 
|> slowdown and it's ONLY when I dump her to the floor that it 
|goes into 
|> the speed DECREASE.� It's so counter intuitive to back off the pedal 
|> when you're trying to pick up speed.� Especially when just 
|one or two 
|> millimeters too much and now you're slowing down due to throttle 
|> position and that semi is right at your back door and closing fast!
|>
|> I'm going to check the cap and rotor but anyone have any other 
|> thoughts or heard/seen this?
|> It's just so strange that it starts and runs fine at all 
|other points.� 
|> I guess I shouldn't completely discount a fuel issue but 
|it's not like 
|> the new pump is cavitating ONLY at that speed and every time ONLY at 
|> that speed.� I guess it could be a total fuel volume issue but how 
|> could it be, again, only at that almost exact same point each and 
|> every time?� Seems too specific for fuel.� Electronics are the only 
|> things I know of that can be so repetitive and exact.� That keeps 
|> putting me back at ignition.
|>
|> Thanks,
|>
|> TJ
|>
|> Yes, I have spare ECM's and AFM's so playing swaptronics is not a 
|> problem.
|-----
|No virus found in this message.
|Checked by AVG - www.avg.com
|Version: 10.0.1410 / Virus Database: 1520/3921 - Release Date: 
|09/26/11